Description
Expandable Graphite – Purity: 95–97%, Size: 50 mesh
Expandable Graphite (also called exfoliated graphite) is a specially engineered form of natural graphite treated with intercalating agents, typically sulfuric acid. When exposed to heat, the graphite layers separate and expand dramatically, producing worm-like, porous expanded flakes that are several millimeters long.
This expansion process gives the material exceptional flame-retardant performance, thermal insulation, oxidation resistance, and chemical stability, making it highly valuable across a range of industries from fire safety and metallurgy to coatings, energy storage, and advanced composites.
Technical Properties
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Purity: 95–97%
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Particle Size: 50 mesh
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Form: Flake Powder
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Expansion Behavior: Rapid volumetric expansion when heated
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Appearance: Black, shiny flakes
Applications
Flame Retardants & Fire Protection
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Widely used in intumescent flame-retardant systems.
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Expands to form a protective thermal barrier under fire conditions.
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Enhances fire safety in plastics, foams, rubbers, textiles, and building materials.
Graphite Foil & Sealing Materials
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Expanded graphite flakes can be compressed into graphite foil, sheets, and gaskets.
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Offers chemical resistance, flexibility, and heat conduction, ideal for industrial sealing.
Metallurgical Uses
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Serves as a covering agent for molten metals and molds in foundry applications.
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Provides oxidation protection and insulation, improving process efficiency.
Coatings, Paints & Chemicals
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Used in paints, varnishes, and coatings for anti-corrosion and flame-retardant properties.
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Applied as an additive to improve lubricity and conductivity in specialized formulations.
Emerging Applications
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Investigated for energy storage devices (batteries and supercapacitors).
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Useful in environmental remediation and pollutant absorption.
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Potential role in advanced composites and thermal management systems.